/in/foo.cc:40:2: error: stray '#' in program
 }#include<bits/stdc++.h>
  ^
/in/foo.cc:40:3: error: 'include' does not name a type
 }#include<bits/stdc++.h>
   ^~~~~~~
/in/foo.cc:42:11: error: redefinition of 'const int maxn'
 const int maxn=30100;
           ^~~~
/in/foo.cc:3:11: note: 'const int maxn' previously defined here
 const int maxn=30100;
           ^~~~
/in/foo.cc:43:11: error: redefinition of 'int a [30100]'
 int a[maxn];
           ^
/in/foo.cc:4:5: note: 'int a [30100]' previously declared here
 int a[maxn];
     ^
/in/foo.cc: In function 'int main()':
/in/foo.cc:45:5: error: redefinition of 'int main()'
 int main()
     ^~~~
/in/foo.cc:6:5: note: 'int main()' previously defined here
 int main()
     ^~~~
/in/foo.cc: In function 'void qsort(int, int)':
/in/foo.cc:60:6: error: redefinition of 'void qsort(int, int)'
 void qsort(int l,int r)
      ^~~~~
/in/foo.cc:21:6: note: 'void qsort(int, int)' previously defined here
 void qsort(int l,int r)
      ^~~~~